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SIP Notify Answer event on T4 range
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DMC_Support Offline
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Posts: 3
Joined: Aug 2017
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Post: #1
SIP Notify Answer event on T4 range
The SIP Notify Answer event does not work on Yealink T4 phones running Firmware v80 or v81. It does work on Firmware v71.

Steps to reproduce (on a phone running v81 firmware):

1) Register a T4 (e.g. T41P) to an Asterisk system. I used FreePBX 13.14.0 with chan_pjsip.

2) Configure the SIP Notify as follows:

/etc/asterisk/sip_notify_custom.conf

[yealink-answer]
Event=>answer=true

3) Restart Asterisk

4) Place a call to the endpoint

5) Send a SIP notify to Asterisk:

pjsip send notify yealink-answer endpoint 1011

6) The phone will not do anything although it does send a 200 OK response to the Asterisk system.

I downgraded the firmware to v80. I had the same problem.

I downgraded the firmware to v71. The SIP Notify Answer event worked as expected.

I have tested this on a T41 and a T46.

Has this function been deprecated or changed or is this a bug ?

Please let me know if you require any further information.

Colin
DMC
08-03-2017 04:34 PM
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Lucia_Yealink Offline
Super Moderator
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Posts: 467
Joined: Aug 2016
Reputation: 5
Post: #2
RE: SIP Notify Answer event on T4 range
Dear DMC,

Thank you for your detail information.
It is a known issue, and we have released a new firmware version to solve it.
Please download the firmware in the link below and do test:
http://ftp.yealink.com/?ShareToken=E5750...75B8057E59

Any question, please let me know.

Best Regards
Lucia
08-04-2017 02:00 AM
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DMC_Support Offline
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Posts: 3
Joined: Aug 2017
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Post: #3
RE: SIP Notify Answer event on T4 range
Just to confirm that the SIP Notify Answer event feature works on the firmware you provided.

Thank you for your help.

Colin
DMC
08-10-2017 05:43 AM
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